title: Array first item specific character
body: <p>I have a array with much different combinations, now, i want to get the number/code that starts with <code>_</code> at the begin of the array. I tried much things with usort, but not found the best fix.</p>
  
  <p>Example array:</p>
  
  <pre><code>jhdjfhasjdfh234324
  6524kl6j245-68tgh345345
  ji43h593408ug8gfsspdkf
  _23i490u2458djiofjgoskdgk
  4534326jk36hj4j526hkj45t
  43u25h6jih245ji3
  </code></pre>
  
  <p>And output:</p>
  
  <pre><code>_23i490u2458djiofjgoskdgk
  jhdjfhasjdfh234324
  6524kl6j245-68tgh345345
  ji43h593408ug8gfsspdkf
  4534326jk36hj4j526hkj45t
  43u25h6jih245ji3
  </code></pre>
  
  <p>And, there can't be more codes that starts with <code>_</code>.</p>
  
  <p>Thanks.</p>