my $command = "/opt/local/bin/convert foo.jpg -crop ${w}x$h+$x+$x ./cropped/foo.jpg";
my $result = `$command`;
say qq|{"result":"$result"}|;

##</code><code>##

Server version: Apache/2.4.56 (Unix)
Server built:   Oct 28 2023 12:23:23
Server's Module Magic Number: 20120211:126
Server loaded:  APR 1.5.2, APR-UTIL 1.5.4, PCRE 8.44 2020-02-12
Compiled using: APR 1.5.2, APR-UTIL 1.5.4, PCRE 8.44 2020-02-12
Architecture:   64-bit
Server MPM:     prefork
  threaded:     no
    forked:     yes (variable process count)
Server compiled with....
 -D APR_HAS_SENDFILE
 -D APR_HAS_MMAP
 -D APR_HAVE_IPV6 (IPv4-mapped addresses enabled)
 -D APR_USE_FLOCK_SERIALIZE
 -D APR_USE_PTHREAD_SERIALIZE
 -D SINGLE_LISTEN_UNSERIALIZED_ACCEPT
 -D APR_HAS_OTHER_CHILD
 -D AP_HAVE_RELIABLE_PIPED_LOGS
 -D DYNAMIC_MODULE_LIMIT=256
 -D HTTPD_ROOT="/usr"
 -D SUEXEC_BIN="/usr/bin/suexec"
 -D DEFAULT_PIDLOG="/private/var/run/httpd.pid"
 -D DEFAULT_SCOREBOARD="logs/apache_runtime_status"
 -D DEFAULT_ERRORLOG="logs/error_log"
 -D AP_TYPES_CONFIG_FILE="/private/etc/apache2/mime.types"
 -D SERVER_CONFIG_FILE="/private/etc/apache2/httpd.conf"

##</code><code>##

  Platform:
    osname=darwin
    osvers=22.0
    archname=darwin-thread-multi-2level
    uname='darwin 5bxbb.p1s.plx.sd.apple.com 22.0 darwin kernel version 22.1.0: thu dec 15 17:42:24 pst 2022; root:xnu-8792.41.9.100.2~1development_x86_64 x86_64 '
    config_args='-ds -e -Dprefix=/usr -Dccflags=-g  -pipe  -Dldflags= -Dman3ext=3pm -Duseithreads -Duseshrplib -Dinc_version_list=none -Dcc=cc'

##</code><code>##

Version: ImageMagick 6.9.11-60 Q16 x86_64 2021-01-25 https://imagemagick.org